Case File 001 — Three Birds on One Rail
A postal clerk describes a line of mechanical birds. How many birds are actually there?
CASE STATUS: OPEN TO READERS
LOCATION: East Tower Postal Rail
A postal clerk saw several mechanical birds sitting in a straight line.
He wrote:
— One bird had two birds behind it.
— One bird had two birds in front of it.
— One bird was between two other birds.
QUESTION
What is the smallest number of mechanical birds that could fit all three statements?
YOUR INVESTIGATION
Place the mechanical birds on the interactive rail below, then test your theory. You can also discuss your reasoning in the comments.
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